Appendix
A.1 Abbreviations
NCU 7x0.2
108 Manual, 02/2011, 6FC5397-0AP20-0BA0
SRAM Static RAM: Static memory (battery-backed)
TCU Thin Client Unit (communication with operator panels)
TS Teleservice
VDE Association of Electrical Engineering, Electronics and Information Technology (Germany)
Full duplex An Ethernet/PROFINET port can simultaneously transmit and receive data.